Amazon's statement on the matter: "Currently, we do not have the ability to assign certain carriers to a specific customer or address but will continue working with all of our carriers to drive improvements for our customers."
Not that it's much better here (Vienna), TNT, GLS and DHL tend to display "out for delivery" on the tracking site multiple days in a row, prompting me to stay in all day, yet no delivery (with some excuse on the tracking info, and no slip in the letterbox). They of course do finally turn up when I'm out at the supermarket after running out of food. My theory is we're located at the end of their run, so if they don't complete it by the time they feel they want to go home, they just make something up.
The Austrian post is even worse. For some reason amazon tend not to show the tracking number for items sent by post even though they have one. I've had orders which hadn't turned up 8-9 days after the shipping notification; after a bit of back and forth amazon revealed the tracking info, which I then took to the local post office along with ID. The parcel was there and one day from being sent back. As if to mock me, the next day there was a "you were out" slip in the letterbox for the same parcel.
One upside of living here: I once had a box of RAM sitting on my doorstep untouched for a week or so - I'd received no dispatch notification and went on holiday, expecting to come back to a delivery failure slip. (I'd ordered it a week earlier, when it was "in stock for next day dispatch" - not amazon though)
As others have mentioned, the really annoying thing here was that I was working from home at the time and they didn't ring the bell. Surely it's less effort to ring the doorbell than it is to write out a card?